I just made level 10 with my Gowen account, and I could choose Primrose but I have a question about her level up skill, does it have the same effect as when the Mercenary Level ups on every unit, or only the Mercenary, or on anyone. In other words do their stats go up or is it simply to prevent returns?

I can only use Bringer, BKR Jack, and returns cuz I'm a free player. It's my best shot at winning!

As far as i know, simply to prevent return and other lvl based skills. Mercenary doesnt get extra stats for lvling up either, he gets the stats along with the lvl (so even if you use prim on him, he wont get +20AT +5def).

Something must be wrong with me. I'm giving advices to someone i should kill.